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  • AL-KO Highline 51.7 SP Self-propelled 4IN1 Petrol Lawn mower

AL-KO Highline 51.7 SP Self-propelled 4IN1 Petrol Lawn mower

  • Brand: AL-KO

  • AK119813

  • Availability: In Stock

  • Recommended Retail Price: £529.00

  • Our Price £449.00

  • You save: £80.00

The Highline petrol lawn mowers offer great choice to the consumer with superb features and specifications at affordable prices. Just choose your ideal cutting width, engine type and drive system. The Highline 51.7 lawnmowers have the widest cutting width in the range at 51cm / 20”.

The AL-KO Highline 51.7 SP self-propelled mower has a 20 inch / 51cm cutting width, single speed power drive and is powered by a Briggs & Stratton 650 EXi engine. The taller MaxAirFlow steel cutting decks being fitted to these Highline 51.7 models will improve grass collection and help to prevent the discharge channel from becoming blocked.

The Highline 51.7SP self-propelled lawn mower has the 4-in-1 function which gives the user the choice between collection, rear discharge, side discharge and mulching. The grass is collected into an EasyClick 70L box which has a fill-level indicator to let you know when it requires emptying. Changing the cutting height couldn’t be easier with the spring assisted central lever. Set the lever through 7 adjustments from 30 – 80mm. Start with the highest setting, then work down gradually to achieve the best cut and finish for your lawn.

If you don’t want to just cut & collect the grass you can choose between discharging it to the rear of the mower, discharging it to the side in a neat line or mulching it into fine pieces.

The rear or side discharge mowing functions are especially suited to cutting informal or long grass areas where the cuttings can be left to wilt back naturally.

Mulching is an excellent way to feed the lawn as the tiny grass pieces are rich in nutrients and as they wilt will release these back into the soil. Mulching is recommended in drier conditions and when the grass is shorter. The pieces are so small they virtually disappear into lawn whilst you’re mowing.


  • 70 litre Easy Click rigid grass box designed for optimum airflow which improves the filling performance. The collector can be re-attached easier with a guide rail. Fill level indicator to alert the user when the collector is full.
  • MAXAIRFLOW Steel Deck: The deeper cutting deck with larger discharge channel increases the airflow so the grass cuttings are thrown higher to the back of the grass box. The box can then be filled to the top and the discharge channel doesn’t get blocked.
  • Highline lawnmowers can be stood up vertically for under deck cleaning or space saving storage.
  • 4INONE Function: Mow, collect, side discharge and mulch
  • Wide XXL rear wheels (280mm) with double ball bearings ensure easy manoeuvrability
  • Briggs and Stratton ReadyStart engines require no priming before starting


  • Model: Highline 51.7SP
  • Type: 4 wheeled
  • Lawn Size: Up to 1,800m2
  • Blade Type: Rotary
  • Cutting Width: 51cm / 20 inch
  • Engine: Briggs and Stratton 650EXi ReadyStart
  • Displacement: 163cc
  • Power: 2.4kW
  • Starter: Recoil
  • Drive: Yes, single speed
  • Cutting Deck: MaxAirFlow Steel
  • Fuel: Petrol
  • Engine Oil: 4 stroke (0.6l bottle included)
  • Cutting Height Adjustment: Central, Spring assisted lever
  • Cutting Heights: 7 positions from 30 - 80mm
  • Collector Size: 70l
  • Collector Type: EasyClick rigid with guide rail and fill indicator
  • Mulching: Yes
  • Side Discharge: Yes
  • Wheel Size: 200 / 280mm, ball bearings
  • Weight: Approx 35.5kg
  • Warranty: Manufacturer's 5 year for domestic use only (Terms & Conditions Apply)
Cutting Width
20" / 51cm
Deck Material
Domestic Warranty
5 Year
Engine Manufacturer
Briggs & Stratton
Mowing Functions
4 in 1
Recoil / Manual

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